Genetic exchanges amongst three strains of Saccharomyces cerevisiae have been quantified using genomic data which show that the rate of outcrossing is remarkably low, with only 314 outcrossing events during circa 16 million cell divisions (Ruderfer et al., 2006).
We used Serratia marcescens and Novosphingobium capsulatum bacteria to study how the interaction between resource environment and organisms influence the growth of the bacterial species during circa 200 generations.
Carnivore, also called DCS1000, controversial software surveillance system that was developed by the U.S. Federal Bureau of Investigation FBII), which used the system to search the e-mail and other Internet activity of identified criminal suspects during investigations circa 2000 02.
Masculine or androgynous clothing that fit gender-queer bodies was still not really available during that time (circa 2005), but by then we had each developed a knack for sourcing and styling clothing to match our body types and identities.
Dave Bing #21 of the Detroit Pistons in action shooting over Nick Weatherspoon #12 of the Washington Bullets during an early circa 1970's NBA basketball game at the Baltimore Arena in Baltimore, Maryland.
Emergency hospital visits for cardiac causes dropped from on average 8 per day during 2003 2007 to circa 6 in 2008 2009, coinciding with the move of the cardiac ER to a separate location from the other ER departments.
This should create a healthy sense of urgency — it should prevent critics, in other words, from producing the kind of killingly dull reviews that seem intended for someone trapped in a bus shelter during a giant rainstorm, circa 1953.
Puccini based his opera on David Belasco's play, "The Girl of the Golden West," about the blossoming of true love in a California mining town during the gold rush, circa 1850.
"What we don't need is for that deal to be scuttled because Iran will then take steps to move in a direction of a nuclear program, and the states in the region will also take into account what they need to do, and it could lead to a nuclear arms race," said John Brennan, then the director of the CIA, during an interview with Circa last year.
From the uniform of an officer in the Home Guard, worn during the Civil War, circa 1861-1865.
Pilots on the Russian front during World War II, circa 1939.
